JQuery plugin which lets your users easily define keyboard shortcuts

Plugin author here. There seems to be many solutions out there which let a developer specify keyboard shortcuts code-side, but nothing which lets their users easily enter/change keyboard shortcuts in a text box, with good usability. Here's my attempt at the problem.

Hopefully if this is easier, productivity sites like github will start to allow users to define their own keyboard shortcuts rather than forcing down a predefined set on you.